package com.example.demo.config;

import org.springframework.boot.CommandLineRunner;
import org.springframework.core.env.Environment;

import java.util.Objects;

public class CustomCommandLineRunner implements CommandLineRunner {

    Environment env;
    public CustomCommandLineRunner(Environment env){
        this.env=env;
    }


    @Override
    public void run(String... args) throws Exception {
        System.out.println("利用Spring Boot自动装配的CommandLineRunner");

        System.out.println("生成一个随机字符串:".concat(Objects.requireNonNull(env.getProperty("random."))));
    }
}
